OHA Drinking Water Services
Certification List

Table is loading - please wait...
Getting Started
This page lists all OHA-certified operators, cross connection specialists, and backflow assembly testers. To get started, choose one of the viewing options below. You can reset the view to see all or part of the data set at any time.

Where would you like to start?




Looking for the old Operators for Hire list?
Select the D/T Operators option above.





Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List  ::  DW Source Protection
New! Visit our new Drinking Water Source Protection page.

Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules

Need help? Email Drinking Water Services for assistance.Staff/Partner Login